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(No Model.) 4 Sheets-Sheet 1. F. M. LEAVITT. MACHINE FOR GORRUGATING AND PUNCHING METAL STRIPS FOR MATS.

No. 438,629. Patented Oct. 21, 1890.

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(No Model.) 4 Sheets-Sheet 2.

F. M. LEAVITT,

MACHINE FOR GORRUGATING AND PUNGHING METAL STRIPS FOR MATS.

No. 438,629. PatentedOot. 21,1890.

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(No Model.) 4 SheetsSheet 3.

F. M. LEAVITT. MAGHINE FOR GORRUGATING AND PUNGHING METAL STRIPS FOR MATS.

, No. 438,629. Patented Oct. 21, 1890.

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F. M. LEAVITTf MACHINE FOR GORRUGATINGAND PUNGHING METAL STRIPS FOR MATS.

N0. 4 38,6Z9 Patented Oct. 21, 1890.7

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A 3 UNITED ST TES PATENT OFFICE.

FRANK M. LEAVIT-T, OF BROOKLYN, ASSIGNOR TO THE NEW YORK STEEL MAT COMPANY, OF NEW YORK, N. Y.

MACHINE FOR CORRUGATING AND PUNCHING METAL STRIPS FOR MATS.

SPECIFICATION forming part of Letters Patent No. 438,629,:1ated October 21, 1890.

Application filed February 24, 1890. Serial No. 841,616. (No model.)

To all whom it may concern.-

Be it known that I, FRANK M. LEAVITT, of

the city of Brooklyn, county of Kings, and State of New York, have invented an Improved Machine for Forming and Punching Oorru gated Strips for Metallic Mats and other Purposes, of which the following is a specification. a My invention relates to a new machine for automatically forming and punching corrugated strips for metallic mats and other purposes; and it consists, mainly, in combining with ordinary corrugating-rollers certain corrugating-plates and perforating devices, as will be hereinafter more fully described.

The metallic mats referred to are what are known as the Rochester or analogous mat, shown in Patents Nos. 377,580 and 387,978, composed of corrugated or analogouslyformed metallic strips secured together to form a cellular appearance.

The object of my present invention is to provide a machine which shall first corrugate the metallic strips by ordinary corrugatingrollers, then true them by means of corrugating-plates, so that the strips may register or fit perfectly together, and at the same time punch or perforate them so that the corrugated strips may be secured by rods passing through these punch holes or perforations to the frame of the mat.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which- Figure 1 is a front elevation of a machine embodying my invention; Fig. 2, a side clevation of the same; Fig. 3, a cross-section of Fig. 1 on the line 0 0, showing the corrugating-plates open; Fig. 4, a horizontal section of Fig. 3 on the line k 76,: Fig. 5, an enlarged view of the corrugating and punching devices, the corrugating-plates being closed and the punching device passed through the strip; Fig. 6, a side View of the finished corrugated strip, and Fig. 7 aface view of the same.

Similar letters in the several views designate similar parts.

A represents the bed-plate of my improved machine, upon which uprights A A" A rest, being bolted or otherwise secured to said bed-plate and joined at their tops to form a frame by a bar a. The uprights A A are provided with suitable bearings for the main shaft B and pulley-wheel O, which actuate the machine.

E and F are two rockshaft-s working in suitable bearings placed in the uprights A A above and on either side of the main shaft B. E and F are two similar rock-shafts working in bearings placed in the uprights A A above the bed-plate.

G is a slide-box arranged along the outside of the upright A provided with gudgeons b b at the upper end, pivoted to suitable togi gle-j oints b connected with the upper rockshafts E F, respectively. The slide-box G is similarly provided at its lower end with gudgeons e e, pivoted to toggle-joints e 6 connected with the lower rock-shafts E F. The slide-box G thus operates both sets of rock-shafts E F and E F when it moves up and down. I

The slide-box G is operated bya block f and crank f, fastened to a cog-wheel d at one end of the main shaft 13. The block f and pin f raise and lower the slide-box G by reason that the block slides laterally in the yoke g,

situated on the under side of the slide-box G when the cog-wheel d is rotated.

The upper rock-shafts E and F connect by toggles b b with the cross-head R to depress and raise it, and the rods 19 extend from said cross-head R to the upper corrugatingplate P, as clearly shown in Fig. 3. The lower rock-shafts E and F are similarly connected by toggles e e to a block 3, raising andlowering said block the upper ends of these toggles e connecting with screw-bearings e, that project from the block S. The lower corrugating-plate Q is inserted or doweled in this block S, as shown in Fig. 3. It will thus be seen that the motion up and down of the slidebox G will be imparted through the. toggles to the cross-head R and block S, and thence to the corrugating-plates P and Q, bringing them together and separating them at certain intervals, depending upon the motion imparted to the slide-box G through the main IOO A and the slide-box G. This yoke-bar H is pivoted at its center H to the upright A. The upper end of the yoke-bar is recessed and adapted to receive a block 77., secured by a pin h to the cog-wheel (1, having its bearing in the upright A" and geared to the cog-wheel d, operated by the main shaft B. At the lower end H of this yoke-bar a screw-adjustable connecting-rod M is pivoted. This connecting-rod M is pivoted at n to a lever-arm or projection N of a free ring 0, placed about the ratchet i. The free ring 0 has an indentation or recess at its upper end, into which the pawl or stop m of the ratchet z is set. The ratchet z is keyed to the shaft Z',which has its -bearings in the frame I, situated in front of the machine and attached by bolts or otherwise to the front of the uprights A A as shown in Fig. 1. A corrugating-roller Z is keyed to the same shaft Z, upon which the ratchet 11 is keyed, and is operated by the said ratchet. The yoke-bar H has an oscillating motion conveyed to its upper end by the cog-wheel cl, and transmits this motion to the free ring 0, through the connecting-rod M and lever-- arm N. The free ring 0 when pushed in one direction by its lever-arm N carries the pawl m with it, slipping over the teeth of the ratchet '6, but when pushed in the other direction the pawl 07?. drops into the teeth of the ratchet 2' and pushes it and the corrugating-roller Z forward, thus producing alternate motion and rest in the corrugating-roller Z. The upper corrugating-rollerj is connected by a suitable train 0 0 with the lower roller Z, and moves and remains at rest with the lower roller. These two corrugating-rollers form the corrugating device in my machine, and receive their motion at stated intervals from the main shaft B through the cog-wheels d and d and the connecting mechanism previously described. Hence it will be seen that both the corrugating-plates P and Q and the corrugating-rollers j and Z receive motion from the main shaft, but by the arrangement of the connecting mechanism the plates and rollers are operated at difierent intervals of time. For instance, when the slide-box G is depressed, as shown in Fig. 2, the corrugating-plates P and Q are separated; but at the same time the connecting-rod M and free ring 0 are drawn inward by the yoke-bar II, and

the pawl m, dropping into the teeth of the ratchet-wheel 2', sets the corrugating-rollers in motion. In the same manner while the corrugating-plates P and Q are being brought together the slide-box G is raised and the yoke-barH pushes the connecting-rod M outward, the free ringO carries the pawl m over the teeth of the ratchet 2', and the corrugating-rollers remain at rest. In connection with these corrugating and truing devices I have invented a mechanism which shall punch holes in the strips while they are held between the corrugating-plates. This I accomplish by placing upon the main shaft B, between the toggles 12 1), a crank 7", attached by the screw-adjustable rod r, pivoted at t t to the block T, carrying the punching device or devices 19. The punching device 19 passes through holes 00 ac in the upper and lower corrugating-plates. The revolution of the crank 0 around the main shaft 13 is so timed that the punching device 29 is passed through and wholly withdrawn from the corrugatingplates while they remain in contact.

The operation of my machine is as follows: The strip or strips of metal are first fed into the corrugating-rollers through the feedchannels L L L, which may be one or more, as desired. The free ring 0 is actuated and sets the corrugating-rollers in motion and the strip corrugated with a number of corrugations, depending upon the number of teeth over which the pawl slides. To vary the number of corrugations, all that is necessary is to pivot the connecting-rod Mto the crank N at n or n. The strip after it has been corrugated is next brought between the corrugating-plates P and Q, and when the corrugations fit into the corrugations of the plates the corrugating-rollers cease to act, and the corrugating-plates close together, thus straightening or truing the imperfect form of the strips as they leave the corrugating-rollers. lVhile the strips are held in these corrugatingplates the punching mechanism is operated and passes through and is withdrawn from the. strip. The corrugating-plates then separate and the corrugating-rollers again begin to act, and the operation is continued indefinitely until the strips have all been corrugated, trued, and punched.

It is obvious that the corrugating-rollers may be adjusted by means of screw-bearings 1;, so that the strip may be corrugated to any depth and form. I may also employ suitable guides q q to keep the corrugated strips in proper position in the corrugating-plates, and also suitable channels 3 and 11 for the entrance and exit of these strips to and from the corrugating-plates.

My mechanism maylof course be varied as the skill of the machinist may desire, and I do not desire, therefore, to limit myself to the specific mechanism shown and described.

What I do desire to claim and secure by Letters Patent is-- 1. In a machine forcorrugating and truing metallic strips, the combination of the corrugating-rollers j Z with the corrugating-plates P Q, and with means, substantially as described, whereby said corrugating-rollers are brought into motion when the corrugatingplates are separated and remain at rest when said corrugating-plates are brought together, as and for the purpose set forth.

2. In a machine for corrugating, truing, and perforating metallic strips, the combination of the corrugating-rollers j Z with the corrugating-plates P Q, and with the punching device p, and with means, substantially as described, whereby said corrugating-rollers are brought into motion when the corrugating- ITO plates are separated and remain at rest when said corrugating plates are brought together, and with means, substantially as described, whereby said punching device is passed through and wholly withdrawn from the corrugating-plates while the same remain together, as and for the purpose set forth.

The foregoing specification of my invention signed by me this 13th day of February, 1890.

FRANK M. LEAVITT. Witnesses:

HARRY M. TURK, LIVINGSTON EMERY. 

